US4181607AExpiredUtilityPatentIndex 69

Removal of asbestos fibers from water

Assignee: US INTERIORPriority: Sep 15, 1978Filed: Sep 15, 1978Granted: Jan 1, 1980

Est. expirySep 15, 1998(expired)· nominal 20-yr term from priority

Inventors:KHALAFALLA SANAA E SCHILLER JOSEPH E

B01D 39/06C02F 1/281Y10S210/902

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Abstract

Asbestos fibers are removed from water by filtration through a bed of magnesium oxide.

Claims

exact text as granted — not AI-modified

We claim: 
     
       1. A method for removal of asbestos fibers from water, the concentration of the fibers in the water being about 1 to 10 parts per million, comprising filtering, the water through a layer of magnesium oxide whereby the asbestos fibers are removed from the water. 
     
     
       2. The method of claim 1 in which the filtration is accomplished by percolation of the water through a bed of the magnesium oxide in a column. 
     
     
       3. The method of claim 1 in which the particle size of the magnesium oxide is in the range of about 60 to 400 mesh.

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